Overview of the project: A project from Brunei Shell Petroleum Company for the SFI project TFS work has been conducted jointly by Wescot Energy & Terralog Technologies Inc (TTI) since early August 2018. With the use of Slurry Fracture Injection (SFI), a unique technology owned by Terralog is a process for the deep well disposal of large volumes of oily viscous and granular waste streams in the Petroleum industry.